Added flag to control VS Feedback Panel

Implementation of updated visual signals for the File manager
requires gating the new features behind a flag.

This CL adds a flag to control the new Feedback Panel.

Bug: 947388
Change-Id: Ia0d4ae9e5f1ebbc8bd3a88b4fa9c5e87d340b3c6
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1545436
Commit-Queue: Alex Danilo <[email protected]>
Reviewed-by: Noel Gordon <[email protected]>
Reviewed-by: Elly Fong-Jones <[email protected]>
Cr-Commit-Position: refs/heads/master@{#646724}
diff --git a/chrome/browser/flag_descriptions.cc b/chrome/browser/flag_descriptions.cc
index 91926ea1..bfb9bc6 100644
--- a/chrome/browser/flag_descriptions.cc
+++ b/chrome/browser/flag_descriptions.cc
@@ -3205,6 +3205,10 @@
     "Enable ChromeVox rich text indication, which automatically notifies the "
     "user of text styling.";
 
+const char kFileManagerFeedbackPanelDescription[] =
+    "Enable new feedback panel in the Files app.";
+const char kFileManagerFeedbackPanelName[] = "Files App. feedback panel";
+
 const char kFileManagerTouchModeName[] = "Files App. touch mode";
 const char kFileManagerTouchModeDescription[] =
     "Touchscreen-specific interactions of the Files app.";